android 调用打印机 Android进阶——安卓调用ESC/POS打印机打印实例
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前言
前一段时间由于工作需要，要研究一下安卓程序调用打印机打印小票，并且要求不能使用蓝牙调用，研究了一下，可以利用socket连接，来实现打印功能。写了个Demo，分享一下。
工具：一台打印机（芯烨XP-80XX），一台安卓测试机
开发环境：Android Studio 1.5
需求：点击按钮，实现打印小票功能，小票上除必要文字外，还要有二维码。
封装了一个Pos打印工具类：
package com.example.haoguibao.myapplication;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.Socket;
/**
* Created by haoguibao on 16/2/18.
* Description : 封装Pos机打印工具类
* Revision :
*/
public class Pos {
//定义编码方式
private static String encoding = null;
private Socket sock = null;
// 通过socket流进行读写
private OutputStream socketOut = null;
private OutputStreamWriter writer = null;
/**
* 初始化Pos实例
*
* @param ip 打印机IP
* @param port 打印机端口号
* @param encoding 编码
* @throws IOException
*/
public Pos(String ip, int port, String encoding) throws IOException {
sock = new Socket(ip, port);
socketOut = new DataOutputStream(sock.getOutputStream());
this.encoding = encoding;
writer = new OutputStreamWriter(socketOut, encoding);
}
/**
* 关闭IO流和Socket
*
* @throws IOException
*/
protected void closeIOAndSocket() throws IOException {
writer.close();
socketOut.close();
sock.close();
}
/**
* 打印二维码
*
* @param qrData 二维码的内容
* @throws IOException
*/
protected void qrCode(String qrData) throws IOException {
int moduleSize = 8;
int length = qrData.getBytes(encoding).length;
//打印二维码矩阵
writer.write(0x1D);// init
writer.write("(k");// adjust height of barcode
writer.write(length + 3); // pl
writer.write(0); // ph
writer.write(49); // cn
writer.write(80); // fn
writer.write(48); //
writer.write(qrData);
writer.write(0x1D);
writer.write("(k");
writer.write(3);
writer.write(0);
writer.write(49);
writer.write(69);
writer.write(48);
writer.write(0x1D);
writer.write("(k");
writer.write(3);
writer.write(0);
writer.write(49);
writer.write(67);
writer.write(moduleSize);
writer.write(0x1D);
writer.write("(k");
writer.write(3); // pl
writer.write(0); // ph
writer.write(49); // cn
writer.write(81); // fn
writer.write(48); // m
writer.flush();
}
/**
* 进纸并全部切割
*
* @return
* @throws IOException
*/
protected void feedAndCut() throws IOException {
writer.write(0x1D);
writer.write(86);
writer.write(65);
// writer.write(0);
//切纸前走纸多少
writer.write(100);
writer.flush();
//另外一种切纸的方式
// byte[] bytes = {29, 86, 0};
// socketOut.write(bytes);
}
/**
* 打印换行
*
* @return length 需要打印的空行数
* @throws IOException
*/
protected void printLine(int lineNum) throws IOException {
for (int i = 0; i < lineNum; i++) {
writer.write("\n");
}
writer.flush();
}
/**
* 打印换行(只换一行)
*
* @throws IOException
*/
protected void printLine() throws IOException {
writer.write("\n");
writer.flush();
}
/**
* 打印空白(一个Tab的位置，约4个汉字)
*
* @param length 需要打印空白的长度,
* @throws IOException
*/
protected void printTabSpace(int length) throws IOException {
for (int i = 0; i < length; i++) {
writer.write("\t");
}
writer.flush();
}
/**
* 打印空白（一个汉字的位置）
*
* @param length 需要打印空白的长度,
* @throws IOException
*/
protected void printWordSpace(int length) throws IOException {
for (int i = 0; i < length; i++) {
writer.write(" ");
}
writer.flush();
}
/**
* 打印位置调整
*
* @param position 打印位置 0：居左(默认) 1：居中 2：居右
* @throws IOException
*/
protected void printLocation(int position) throws IOException {
writer.write(0x1B);
writer.write(97);
writer.write(position);
writer.flush();
}
/**
* 绝对打印位置
*
* @throws IOException
*/
protected void printLocation(int light, int weight) throws IOException {
writer.write(0x1B);
writer.write(0x24);
writer.write(light);
writer.write(weight);
writer.flush();
}
/**
* 打印文字
*
* @param text
* @throws IOException
*/
protected void printText(String text) throws IOException {
String s = text;
byte[] content = s.getBytes("gbk");
socketOut.write(content);
socketOut.flush();
}
/**
* 新起一行，打印文字
*
* @param text
* @throws IOException
*/
protected void printTextNewLine(String text) throws IOException {
//换行
writer.write("\n");
writer.flush();
String s = text;
byte[] content = s.getBytes("gbk");
socketOut.write(content);
socketOut.flush();
}
/**
* 初始化打印机
*
* @throws IOException
*/
protected void initPos() throws IOException {
writer.write(0x1B);
writer.write(0x40);
writer.flush();
}
/**
* 加粗
*
* @param flag false为不加粗
* @return
* @throws IOException
*/
protected void bold(boolean flag) throws IOException {
if (flag) {
//常规粗细
writer.write(0x1B);
writer.write(69);
writer.write(0xF);
writer.flush();
} else {
//加粗
writer.write(0x1B);
writer.write(69);
writer.write(0);
writer.flush();
}
}
}
其中，打印机的IP和端口号从打印机的属性设置处可查。
MainActivity中进行调用：
package com.example.haoguibao.myapplication;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import java.io.IOException;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
public class MainActivity extends AppCompatActivity {
//订单菜品集合
private List<FoodsBean> foodsBean;
private Pos pos;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button bt_print = (Button) findViewById(R.id.button);
bt_print.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 开启一个子线程
new Thread() {
public void run() {
try {
pos = new Pos("IP", 9100, "GBK"); //第一个参数是打印机网口IP
//初始化打印机
pos.initPos();
//初始化订单数据
initData();
pos.bold(true);
pos.printTabSpace(2);
pos.printWordSpace(1);
pos.printText("**测试店铺");
pos.printLocation(0);
pos.printTextNewLine("----------------------------------------------");
pos.bold(false);
pos.printTextNewLine("订 单 号：1005199");
pos.printTextNewLine("用 户 名：15712937281");
pos.printTextNewLine("桌 号：3号桌");
pos.printTextNewLine("订单状态：订单已确认");
pos.printTextNewLine("订单日期：2016/2/19 12:34:53");
pos.printTextNewLine("付 款 人：线下支付（服务员：宝哥）");
pos.printTextNewLine("服 务 员：1001");
pos.printTextNewLine("订单备注：不要辣，少盐");
pos.printLine(2);
pos.printText("品项");
pos.printLocation(20, 1);
pos.printText("单价");
pos.printLocation(99, 1);
pos.printWordSpace(1);
pos.printText("数量");
pos.printWordSpace(3);
pos.printText("小计");
pos.printTextNewLine("----------------------------------------------");
for (FoodsBean foods : foodsBean) {
pos.printTextNewLine(foods.getName());
pos.printLocation(20, 1);
pos.printText(foods.getPrice());
pos.printLocation(99, 1);
pos.printWordSpace(1);
pos.printText(foods.getNumber());
pos.printWordSpace(3);
pos.printText(foods.getSum());
}
pos.printTextNewLine("----------------------------------------------");
pos.printLocation(1);
pos.printLine(2);
//打印二维码
pos.qrCode("http://blog.csdn.net/haovip123");
//切纸
pos.feedAndCut();
pos.closeIOAndSocket();
pos = null;
} catch (UnknownHostException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}.start();
}
});
}
private void initData() {
foodsBean = new ArrayList<>();
for (int i = 0; i < 4; i++) {
FoodsBean fb = new FoodsBean();
fb.setName("测试菜品" + i);
fb.setPrice("90.00");
fb.setNumber("1" + i);
fb.setSum("10" + i + ".00");
foodsBean.add(fb);
}
}
}
附：小票中菜品的Bean类
public class FoodsBean {
private String name;
private String price;
private String number;
private String sum;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPrice() {
return price;
}
public void setPrice(String price) {
this.price = price;
}
public String getNumber() {
return number;
}
public void setNumber(String number) {
this.number = number;
}
public String getSum() {
return sum;
}
public void setSum(String sum) {
this.sum = sum;
}
}
打印小票样品如图：
小结：
对于调用打印机，不论使用Java语言还是其他语言，思路都是一样的，利用Socket连接上打印机以后，通过IO流进行输出打印，它们的打印指令都是一样的，可以下载打印手册，针对不同的设置，使用不同的打印指令即可。
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